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Modeling of the As (III) adsorption using Fe impregnated polyethylene terephthalate char matrix: A statistical approach.
Sawood, Ghazi Mohd; Gautam, Shashi Bala; Mishra, Ashutosh; Dixit, Shobhit; Singh, Neeta.
Afiliação
  • Sawood GM; Department of Chemical Engineering, Dr. Ambedkar Institute of Technology for Handicapped, Kanpur 208024, India E-mail: ashutosh@aith.ac.in.
  • Gautam SB; Department of Chemical Engineering, Government Polytechnic, Kanpur 208002, India.
  • Mishra A; Department of Chemical Engineering, Dr. Ambedkar Institute of Technology for Handicapped, Kanpur 208024, India E-mail: ashutosh@aith.ac.in.
  • Dixit S; Department of Chemical Engineering and Technology, IIT BHU, Varanasi, Uttar Pradesh, 221005, India.
  • Singh N; Department of Chemical Engineering, Dr. Ambedkar Institute of Technology for Handicapped, Kanpur 208024, India E-mail: ashutosh@aith.ac.in.
Water Sci Technol ; 86(7): 1790-1809, 2022 Oct.
Article em En | MEDLINE | ID: mdl-36240312
The present research aimed to analyse the impact of economical Fe impregnated polyethylene terephthalate (PET) char (PETC-Fe) for adsorption of As (III) through series of column experiments. For an inlet arsenite concentration of 1,000 µg/L, PETC-Fe exhibits excellent uptake capacity of 1,892 µg/g. Central composite design (CCD) in response surface methodology (RSM) was used to evaluate the influence of various process variables on the response function (breakthrough time) for optimization and assessment of interaction effects. The breakthrough time is more responsive to influent As (III) concentration and bed height than inlet flow rate, according to the perturbation plot. Adams-Bohart, Bed Depth Service Time (BDST) model, and Thomas models were used to model the dynamics of the adsorption system. The BDST model suited the experimental data well in the early part of the breakthrough curve, but there were minor variations over the breakpoints. Despite the fact that the experimental values and the data sets estimated using the Adams-Bohart model followed a similar pattern, they differed slightly. The PETC-Fe was found to be a sustainable and highly economical adsorbent, with a desorption performance of more than 97%, indicating the adsorbent's reusability. This adsorbent's excellent As (III) uptake capacity and regeneration performance imply that it might be used in industrial/domestic applications, and the information obtained could aid in future scaling up of the adsorption system.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Arsenitos / Purificação da Água Tipo de estudo: Prognostic_studies Idioma: En Revista: Water Sci Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Arsenitos / Purificação da Água Tipo de estudo: Prognostic_studies Idioma: En Revista: Water Sci Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de publicação: Reino Unido